Muffler.



UNITED STATES rA l TENT oFF-Ion.

OTTO F. PEBSSON, 0F ERIE, PENNSYLVANIA, ASSIGNOR Tt)` GENERAL `EIJICTIZBIG COMPANY, A 'CORPORATION 0F NEW' YORK,

MUFFLEE.

Specification of Letters Patent.

Patented Feb. 17, i914,

Application led September 14, 1912. Serial Ns. WD5-tl,

To all 'whom t may concern.'

This invention relates to devices for deadening the sharp explosive sound of the exhaust from engines driven hy expansive fluids, such as steam or gas.

The object of the. invention is to siinplifj the construction otsueh a niutlier, enabling it to be built up to any desired length by assenibling a plurality 'ot' similar sect-ions. Each section may be a casting of simple construction, and when a number of them are grouped in proper angular relations, a tortuous passage is formed which ei'ectually silences the noise of the expanding gases passing through it. The preferred forni of section is a short cylinder having one end rather thin, and the other end being thick and provided with a groove to receive the thin end of the next section and thus 'form a tight joint. A partition extends across the section, and has openings at diametrically opposite points. On onel side of the partition are radial flues communicating lat their outer ends with said openings and haw ing open inner ends near the center cit the section. 'When constructed in this form., each section is unitary and operatively coni'- plete in itself (regardless of its being structurally an integral casting, as above inentioned), and from such sections the muliler can be huilt up by the more addition ott inlet and. outlet connections and fastening means for securingr the sections together. 'When a plurality of such sections are grouped to gether with the ilu-es on each section angularly displaced with reference to those on the next section, there is formed a tortucus passage for the exhaust gases, in which they are led alternately in and out in radial lines and at the same time carried in a helical path 'around the axis of the mulller,

` In the accompanying drawing, Figure is a longitudinal section of a mutier enibo 1 ing my invention. Fig. 2 is an isometric view of one side of one of the sections. Fig, 3 is a similarfview of the other side of ssection, partly broken away, and Fig.

Across section on a larger scalea et' the maille-r. il pipe l pass through openings 8 in the head aland after trai'ei ii 'he several sections of. the niulier escape to dthe atmosphere bij the holes 9 in the head 5. L

Each section has a short cylindrical hotly. l0, thin at one end and thick at the otheil, c A groove ll is formed in the thiol: endto receive the thin end et the next section and' maire a tight joint. partition l2 extends across the section, having a central hole :for the clamping oolt. The body l@ forms, as it were, a Tini around the diaphragm or partition l2. One er more ports l are formed in the partition, preferably closeto the'body or rim lG', and at diainetziically opposite points, it there are two. Gn one side ot' the partitions are one or more radial fines l5, each communicating at its outer end with its respective port le. and having its inner end ope near the holt In seni tiling num? such. sections, arranged that the fines on one are n longitudinal line Wit tion; init shows an ,D sixty di tions am in posed two @the sect-io placed by sivty and ci hundred degrees (SQ litt!) arrangements may he made with out departing scope of any invern inward.Y colt 8, i

les of the partit the saine time the axis of the inni rollt il l",

W U ln accordance wie@ the no patent statutes, l' have descrioid .I ci )le operation of rnv "on, tcgeth the apparatus which non' consider to represent the h einhotiime thereof; but

rei-stood the appa 1li ratas shown is only illustrative, and that the invention can he carried out by other lneans.

What claim as nenT and desire to secure by Letters Patent of the United States, is

l., A mullier comprising a plurality of similar cylindrical sections itted together, eacl'rsection having a partition, and means .tor causing the exhaust gases to traverse said partition in oppositedirections on opposite sides.

2. it, inuiller comprising a plurality o' similar sections fitted together, each section coinprising a riin and a partition having one or more ports near the rim, and carrying a flue on one side thereof communicating "with said port and opening toward the center of said section.

3, A section for a inuliier having a short cylindrical body or riin and a partition extending across and provided with one or more ports near the riin, and also with radial .lues connnunicating` with said ports and opening near the center out said section.

et. A inul'l'ler comprising plurality of silnilar cylindrical. sections, each having a partition containing ports and carrying ran dial fines communica-ting therewith, said sec tions being angularly displaced so that the fines on adjacent sections are not in the saine longitudinal alineinent.

l5. A inutller comprising a .plurality of.

similar unitary cylindrical. sections fitted together, each section having a partition carrying means Afor causing the exhaust lgases to traverse said partition in opposite directions on opposite sides. Y l

6. A niutller comprising a plurality of' similar unitary sections fitted together, said sections each Comprising a riin and a partition having a port adjacent theriin and carrying on one side thereoit means forming a flue cominunicating` with said port and opening toward the center ol the section. V "I, A, inull'ler comprising` a plurality of similar unitary sections litted together, said A sections each comprising a rim and a partition having on the side thereol a radially extending; line which is open at one end and' at the other end con'nnunieatcs with a port in said partition. ,Y

ln 'Witness whereof, l. have hereunto set my hand this 9 day of Sept., '1912.'

OTT() F. PERSSON. Witnessesz Dolman "WEAVER, YV. 5l. CARROLL. 

